CN110106913B - Damping panel assembled reinforced earth retaining wall and construction method thereof - Google Patents
Damping panel assembled reinforced earth retaining wall and construction method thereof Download PDFInfo
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- CN110106913B CN110106913B CN201910322650.0A CN201910322650A CN110106913B CN 110106913 B CN110106913 B CN 110106913B CN 201910322650 A CN201910322650 A CN 201910322650A CN 110106913 B CN110106913 B CN 110106913B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0266—Retaining or protecting walls characterised by constructional features made up of preformed elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
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Abstract
The invention discloses a damping panel assembled reinforced retaining wall and a construction method thereof, wherein the damping panel assembled reinforced retaining wall comprises a retaining wall body and a wall rear filling body; the retaining wall body is arranged at the front end of the side slope, and the wall rear filling body is arranged between the retaining wall body and the side slope; the retaining wall body comprises an assembled foundation layer, a bottom panel layer, a hard supporting layer, a lower transition panel layer, a damping energy dissipation layer, an upper transition panel layer and a capping panel layer which are sequentially arranged from bottom to top. The filler behind the wall comprises a reverse filter layer, a geosynthetic material, a reinforced region geotechnical filler and non-reinforced region filling soil. The reinforced retaining wall is formed by splicing various panels and an assembly foundation, the reserved grooves, the protrusions and the non-horizontal structures are adopted for connection and fixation, and the damping and energy dissipation panels are used, so that on one hand, the reinforced retaining wall can be prevented from being damaged by falling off of the reinforced retaining wall panels, pulling out of reinforcing materials and the like under the earthquake condition, and the stability and the safety of the reinforced retaining wall under the earthquake condition are improved; on the other hand, the operation flow in construction is greatly simplified, the construction period is effectively shortened, and the economic benefit is obviously improved.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a damping panel assembled reinforced retaining wall and a construction method thereof.
Background
In recent decades, the economy of China has been rapidly developed, infrastructure construction is performed as well as fierce, highway mileage is continuously increased, traffic networks are gradually perfected, more and more projects are developed to areas with worse geological conditions, and particularly, attention to project earthquake resistance after the Wenchuan earthquake in 2008 is continuously increased. Compared with the traditional gravity retaining wall, the reinforced retaining wall has obvious advantages in the aspects of construction cost, terrain adaptability and earthquake resistance, but a large number of reinforced engineering projects at home and abroad in recent decades show that although the reinforced retaining wall has better earthquake resistance, the reinforced retaining wall still has serious damage under the action of strong earthquake, the most serious damage occurs at the top of the reinforced retaining wall, the top of the retaining wall often has panel falling, ribs are pulled out and the like. In the traditional reinforced retaining wall design, in order to reduce the damage of earthquake action, a measure of improving the rigidity of a panel is often adopted, but the actual effect is not ideal enough, and the construction cost of a project can be improved.
Therefore, how to reduce the damage of seismic waves generated by an earthquake and ground horizontal displacement to the reinforced retaining wall, especially to prevent the top of the retaining wall from being seriously damaged, is a technical problem to be solved in the field.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a damping panel assembled reinforced retaining wall and a construction method thereof, wherein the damping panel assembled reinforced retaining wall is formed by assembling panels in various forms and assembled foundations, and is connected and fixed by adopting reserved grooves, bulges and special structures (non-horizontal structures), and the damping and energy dissipation panels are used, so that on one hand, the reinforced retaining wall panels can be prevented from falling off, ribs can be pulled out and the like under the earthquake condition, and the stability and the safety of the reinforced retaining wall under the earthquake condition are improved; on the other hand, the operation flow in construction can be greatly simplified, the construction period is effectively shortened, and the economic benefit is obviously improved. The invention is suitable for various terrain and geological conditions, can be used as a temporary or permanent structure, can effectively play a role in shock absorption and energy dissipation under earthquake conditions, and reduces the engineering safety risk.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a shock attenuation panel assembled reinforced earth retaining wall, obturator behind barricade body and the wall.
The retaining wall body is arranged at the front end of the side slope, and the wall rear filling body is arranged between the retaining wall body and the side slope.
The retaining wall body comprises an assembled foundation layer, a bottom panel layer, a hard supporting layer, a lower transition panel layer, a damping energy dissipation layer, an upper transition panel layer and a capping panel layer which are sequentially arranged from bottom to top.
The assembly type foundation layer is formed by horizontally splicing a plurality of prefabricated assembly type foundations.
The bottom panel layer is formed by horizontally splicing a plurality of prefabricated bottom panels, and a drainage channel is preset in each bottom panel.
The hard supporting layer comprises a plurality of common hard panel layers, and each common hard panel layer is formed by horizontally splicing a plurality of prefabricated common hard panels.
The bottom of the bottom panel is spliced with the top of the assembly type foundation, the top of the bottom panel is spliced with the adjacent common hard panels, and the upper common hard panel and the lower common hard panel are spliced with each other.
The lower transition panel layer is formed by horizontally splicing a plurality of prefabricated lower transition panels. The bottom of the lower transition panel is spliced with the adjacent common hard panel.
The shock absorption and energy dissipation layer comprises a plurality of shock absorption and energy dissipation panel layers, and each shock absorption and energy dissipation panel layer is formed by horizontally splicing a plurality of prefabricated shock absorption and energy dissipation panels.
The upper transition panel layer is formed by horizontally splicing a plurality of prefabricated upper transition panels.
The top of the lower transition panel and the top of the shock absorption and energy dissipation panel are provided with prefabricated grooves in the tops, inverted L-shaped blocks and rib hooks are arranged in each prefabricated groove in the tops, and vertical edges of the inverted L-shaped blocks are fixedly connected with the bottoms of the prefabricated grooves in the tops.
Bottom prefabricated grooves are formed in the bottoms of the shock absorption and energy dissipation panel and the upper transition panel, an L-shaped block body is arranged in each bottom prefabricated groove, and the vertical edge of each L-shaped block body is fixedly connected with the bottom of the corresponding bottom prefabricated groove; the transverse edges of the inverted L-shaped block body and the transverse edges of the L-shaped block body are placed in a staggered mode, the transverse edges of the inverted L-shaped block body are located in the bottom prefabricated groove, the transverse edges of the L-shaped block body are located in the top prefabricated groove, and the vertical edges of the inverted L-shaped block body and the vertical edges of the L-shaped block body are connected through the damping elastic damping elements; the inverted L-shaped block body, the L-shaped block body and the damping elastic damping element jointly form a damping and energy dissipating device.
The cover top panel layer is formed by horizontally splicing a plurality of prefabricated cover top panels, and the bottom of each cover top panel is spliced with the top of the upper transition panel.
The filler behind the wall comprises a reverse filter layer, a geosynthetic material, a reinforced region geotechnical filler and non-reinforced region filling soil; the inverted filter layer is positioned at the bottom of the wall rear filling body, and vertical edges of the inverted filter layer lean against the assembled foundation layer, the bottom panel layer and the hard supporting layer; the geosynthetic material is horizontally laid, and one end of the geosynthetic material is embedded in the seam between layers of the retaining wall body; the geotechnical filler in the reinforced area is filled in the geosynthetic material, and the filling soil in the non-reinforced area is filled in the area between the reinforced area and the side slope.
The top height of the hard support layer is not lower than 1/2-2/3 of the height of the retaining wall body.
And non-horizontal structures are arranged on the lower transition panel and the shock absorption and energy dissipation panel which are positioned on two sides of the prefabricated groove at the top, and on the shock absorption and energy dissipation panel and the upper transition panel which are positioned on two sides of the prefabricated groove at the bottom.
The non-horizontal structure is corrugated or tooth-like.
The assembled foundation top is provided with the inverted convex recess, and bottom panel bottom is provided with the bellying, and the bellying is pegged graft the cooperation each other with the inverted convex recess.
A construction method of a damping panel assembled reinforced retaining wall comprises the following steps.
And 4, constructing an assembly type foundation layer: the prefabricated assembly type foundation is horizontally spliced to form an assembly type foundation layer, the inverted filter layer and the geosynthetic material are sequentially arranged on the foundation plane of the rear filler side of the wall, one end of the geosynthetic material is placed on the assembly type foundation, and after the geosynthetic material is spread, the geosynthetic material is tensioned from the rear end of the geosynthetic material.
And 7, constructing the hard supporting layer, which comprises the following steps.
7-1, constructing a first layer of common hard panel layer: inserting the bottom of a prefabricated common hard panel into a bottom panel, and pressing and fixing the geosynthetic material placed on the bottom panel; one side or two sides of the common hard panel are horizontally spliced with the adjacent common hard panel to form a common hard panel layer; according to the method in the step 6, completing the construction of the geotechnical filler in the reinforced area of the second layer and the filling in the non-reinforced area; and then continuing to lay out the reverse filter layer and the geosynthetic material, wherein one end of the geosynthetic material is pressed into the common hard panel layer.
Step 7-2, constructing a layer a of common hard panel layer: and (3) inserting the bottom of the common hard panel and the top of the common hard panel below the common hard panel, and sequentially finishing the construction of the a-layer common hard panel layer and the construction of the a + 1-layer reinforced region geotechnical filler and the non-reinforced region filler according to the method in the step 7-1.
And 8, constructing a lower transition panel layer: inserting the bottom of the prefabricated lower transition panel and the top of the common hard panel, and pressing and fixing the geosynthetic material placed on the common hard panel; one side or two sides of the lower transition panel are horizontally spliced with the adjacent lower transition panel to form a lower transition panel layer; completing the construction of the a +2 th layer of the geotechnical filler according to the method in the step 6; one end of the geosynthetic material is then placed on the lower transition panel layer and horizontally spread toward the side slope.
And 9, constructing the damping and energy dissipating layer, which comprises the following steps.
Step 9-1, constructing a first layer of damping and energy-dissipating panel layer: connecting the vertical edge of an L-shaped block body at the bottom of the shock absorption and energy dissipation panel with the vertical edge of an inverted L-shaped block body at the top of the lower transition panel by adopting a shock absorption elastic damping element, then placing the transverse edge of the inverted L-shaped block body and the transverse edge of the L-shaped block body in a staggered manner, wherein the transverse edge of the inverted L-shaped block body is positioned in a prefabricated groove at the bottom of the shock absorption and energy dissipation panel, and the transverse edge of the L-shaped block body is positioned in a prefabricated groove at the top of the lower transition panel; the inverted L-shaped block body, the L-shaped block body and the damping elastic damping element form a group of damping and energy dissipating devices; then, the geosynthetic material placed on the lower transition panel is compressed and fixed; one side or two sides of the shock absorption and energy dissipation panel are horizontally spliced with the adjacent shock absorption and energy dissipation panel to form a shock absorption and energy dissipation panel layer; completing the construction of the a +3 th layer of the geotechnical filler according to the method in the step 6; and continuously laying the geosynthetic material, wherein one end of the geosynthetic material is hung on the rib material hook of the damping and energy dissipation panel and pressed into the panel.
Step 9-2, constructing a b-layer damping and energy-dissipating panel layer: and (3) connecting the bottom of the shock absorption and energy dissipation panel with the top of the shock absorption and energy dissipation panel positioned below by adopting the shock absorption and energy dissipation device in the step 9-1, and sequentially finishing the construction of the b-layer shock absorption and energy dissipation panel layer and the construction of the a + b + 3-layer geotechnical filler according to the method in the step 9-1.
Further comprising step 12, coating protection: and after the construction of the capping panel layer is finished, covering a soil layer or a cast-in-place concrete layer on the top of the retaining wall body to protect the wall top.
The invention has the following beneficial effects:
1. according to the invention, through simple panel modeling design, the assembly type construction of the panel and the foundation is realized, the construction steps are simplified, and the integral attractiveness of the retaining wall is improved by prefabricating the panel; by applying the damping and energy dissipation panel, on one hand, the reinforced retaining wall panel can be prevented from falling off, the rib can be pulled out and the like under the earthquake condition, and the stable safety of the reinforced retaining wall under the earthquake condition is improved; on the other hand, the operation flow in construction can be greatly simplified, the construction period is effectively shortened, and the economic benefit is obviously improved. The construction and installation process is simple, the operation is simple and convenient, and the efficiency is high.
2. The invention is suitable for various terrain and geological conditions, can be used as a temporary or permanent structure, can effectively play a role in shock absorption and energy dissipation under earthquake conditions, and reduces the engineering safety risk.
Drawings
FIG. 1 is a schematic view of the assembled reinforced retaining wall structure with damping panels according to the present invention;
FIG. 2 is a schematic view of the structure of the cover top panel of the present invention;
FIG. 3 is a schematic view of an upper transition panel of the present invention;
FIG. 4 is a schematic structural view of the combination of an upper shock-absorbing energy-dissipating panel and a lower shock-absorbing energy-dissipating panel according to the present invention;
FIG. 5 is a schematic view of a lower transition panel of the present invention;
FIG. 6 is a schematic view of a generic rigid faceplate of the present invention;
FIG. 7 is a schematic view of a bottom panel of the present invention;
fig. 8 is a schematic view of the assembled base of the present invention.
Wherein: 1. a capping panel; 2. an upper transition panel; 3. a shock absorption and energy dissipation panel; 4. an L-shaped block body; 5. a rib material hook; 6. a shock absorbing elastic damping element; 7. a lower transition panel; 8. a common rigid panel; 9. a reverse filtering layer; 10. a plastic drain pipe; 11. a bottom panel; 12. an assembled foundation; 13. a drainage ditch; 14. filling soil in the non-reinforced areas; 15. a geosynthetic material; 16. and (5) geotechnical filling in the reinforced area.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
As shown in fig. 1, a shock-absorbing panel fabricated reinforced retaining wall includes a retaining wall body and a wall back filling body.
The retaining wall body is arranged at the front end of the side slope, and the wall rear filling body is arranged between the retaining wall body and the side slope.
The retaining wall body comprises an assembled foundation layer, a bottom panel layer, a hard supporting layer, a lower transition panel layer, a damping energy dissipation layer, an upper transition panel layer and a capping panel layer which are sequentially arranged from bottom to top.
The assembled foundation layer is formed by horizontally splicing a plurality of prefabricated assembled foundations 12. As shown in fig. 8, the fabricated foundation is preferably a solid structure with a groove on the upper portion, which is made of a hard waterproof corrosion-resistant material, and the left and right sides of the fabricated foundation are respectively provided with a protrusion and a groove, so that the fabricated foundations on the left and right sides can be conveniently connected with each other.
The bottom panel layer is formed by horizontally splicing a plurality of prefabricated bottom panels, and a drainage channel is preset in each bottom panel.
Bottom panel bottom is pegged graft mutually with assembled basic top, and assembled basic top is preferred to be provided with the inverted convex recess, and bottom panel bottom is preferred to be provided with the bellying, and the bellying cooperates with the mutual grafting of inverted convex recess.
As shown in fig. 7, the bottom panel is preferably a solid structure made of hard material and having a special shape, a groove at the upper part and a protrusion at the lower part, a circular hole (i.e. a drainage channel) is reserved at the middle part, and a plastic drainage pipe 10 is inserted into the circular hole; the left side and the right side of the bottom panel are respectively provided with a bulge and a groove, so that the bottom panels on the left side and the right side are convenient to connect with each other.
The hard supporting layer comprises a plurality of common hard panel layers, and each common hard panel layer is formed by horizontally splicing a plurality of prefabricated common hard panels 8. The top height of the hard support layer is preferably not lower than 1/2-2/3 of the height of the retaining wall body.
As shown in fig. 6, the common hard panels are preferably solid structures made of hard materials and having a groove at the upper part and a protrusion at the lower part, and the left and right sides of the solid structures are respectively provided with the protrusion and the groove to facilitate the connection of the common hard panels at the left and right sides.
The top of the bottom panel is spliced with the adjacent common hard panels, and the upper and lower adjacent common hard panels are spliced with each other;
the lower transition panel layer is formed by horizontally splicing a plurality of prefabricated lower transition panels 7; the bottom of the lower transition panel is spliced with the adjacent common hard panel.
As shown in fig. 5, the lower transition panel is preferably a solid structure made of hard material, and has a top prefabricated groove on the top, in which a hard inverted L-shaped block 4 is embedded, and a hole is reserved on the inverted L-shaped block for installing the shock-absorbing elastic damping element.
Further, still be equipped with muscle material couple 5 in the prefabricated recess in top of lower transition panel, the geosynthetic material of being convenient for is more firmly connected with the panel.
The lower transition panels positioned on two sides of the prefabricated groove at the top are provided with non-horizontal structures, the non-horizontal structures are preferably in the shapes of corrugations or similar teeth and the like, and the effects of fixing the panels and enabling the panels to be self-reset are achieved.
The left side and the right side of the lower transition panel are respectively provided with a bulge and a groove, so that the lower transition panels on the left side and the right side are convenient to connect with each other.
The shock absorption and energy dissipation layer comprises a plurality of shock absorption and energy dissipation panel layers, and each shock absorption and energy dissipation panel layer is formed by horizontally splicing a plurality of prefabricated shock absorption and energy dissipation panels 3.
As shown in fig. 4, the shock absorption and energy dissipation panel is made of hard materials, the top of the shock absorption and energy dissipation panel is provided with top prefabricated grooves, each top prefabricated groove is internally provided with an inverted L-shaped block 4 and a rib hook 5, and the vertical edge of the inverted L-shaped block is fixedly connected with the bottom of the top prefabricated groove.
Furthermore, the left side and the right side of the shock absorption and energy dissipation panel are respectively provided with a bulge and a groove, so that the shock absorption and energy dissipation panels on the left side and the right side are connected with each other conveniently.
The upper transition panel layer is formed by horizontally splicing a plurality of prefabricated upper transition panels 2.
As shown in fig. 3 and 4, the bottom of the shock absorption and energy dissipation panel and the bottom of the upper transition panel are both provided with bottom prefabricated grooves, each bottom prefabricated groove is internally provided with an L-shaped block 4, and the vertical edge of each L-shaped block is fixedly connected with the bottom of the bottom prefabricated groove; the horizontal limit of the L type block of invering and the horizontal limit of L type block are crisscross to be put, and the horizontal limit of the L type block of invering is located the prefabricated recess in bottom, and the horizontal limit of L type block is located the prefabricated recess in top, is connected through shock attenuation elastic damping element 6 between the perpendicular limit of the L type block of invering and the perpendicular limit of L type block.
The inverted L-shaped block body, the L-shaped block body and the damping elastic damping element jointly form a damping and energy dissipating device.
And non-horizontal structures are arranged on the shock absorption and energy dissipation panels on two sides of the prefabricated groove at the top, the shock absorption and energy dissipation panels on two sides of the prefabricated groove at the bottom and the upper transition panel, and the non-horizontal structures are wave-shaped or tooth-shaped. The non-horizontal structure not only needs to have the effect of fixing the upper panel and the lower panel, but also can allow the horizontal dislocation (self-resetting) between the panels.
The upper transition panel is also preferably made of hard materials, and the left side and the right side of the upper transition panel are respectively provided with a bulge and a groove which are convenient to be connected with the upper transition panels on the left side and the right side.
The cover top panel layer is formed by horizontally splicing a plurality of prefabricated cover top panels 1, and the bottom of each cover top panel is spliced with the top of the upper transition panel. As shown in fig. 2, the cover top panel is also preferably a solid structure made of hard material and having a protrusion at the lower part, and the left and right sides of the solid structure are respectively provided with a protrusion and a groove for facilitating connection with the cover top panels at the left and right sides.
The filler behind the wall comprises a reverse filter layer 9, a geosynthetic material 15, a reinforced region geotechnical filler 16 and non-reinforced region filling 14; the inverted filter layer is positioned at the bottom of the wall rear filling body, and vertical edges of the inverted filter layer lean against the assembled foundation layer, the bottom panel layer and the hard supporting layer. The geosynthetic material is preferably geogrid, and is horizontally laid, and one end of the geosynthetic material is pressed into a seam between layers of the retaining wall body; the geotechnical filler in the reinforced area is filled in the geosynthetic material, and the filling soil in the non-reinforced area is filled in the area between the reinforced area and the side slope.
The geosynthetic material of the present invention is also referred to as a reinforcement.
A construction method of a damping panel assembled reinforced retaining wall comprises the following steps.
The height H of the shock-absorbing assembly type panel reinforced earth retaining wall is determined according to specific engineering requirements, the length D =0.4-0.7H of the rib behind the retaining wall panel, the total length L = D + s of the geosynthetic material, and s is the length of the geosynthetic material pressed into the panel. The vertical spacing between the ribs is 0.4m-0.8 m.
And 4, constructing an assembly type foundation layer: the prefabricated assembly type foundation is horizontally spliced to form an assembly type foundation layer, the inverted filter layer and the geosynthetic material are sequentially arranged on the foundation plane of the rear filler side of the wall, one end of the geosynthetic material is placed on the assembly type foundation, and after the geosynthetic material is spread, the geosynthetic material is tensioned from the rear end of the reinforcement material, so that the effect similar to prestress is achieved.
And 7, constructing the hard supporting layer, which comprises the following steps.
7-1, constructing a first layer of common hard panel layer: inserting the bottom of a prefabricated common hard panel into a bottom panel, and pressing and fixing the geosynthetic material placed on the bottom panel; one side or two sides of the common hard panel are horizontally spliced with the adjacent common hard panel to form a common hard panel layer; according to the method in the step 6, completing the construction of the geotechnical filler in the reinforced area of the second layer and the filling in the non-reinforced area; and then continuing to lay out the reverse filter layer and the geosynthetic material, wherein one end of the geosynthetic material is pressed into the common hard panel layer.
Step 7-2, constructing a layer a of common hard panel layer: and (3) inserting the bottom of the common hard panel and the top of the common hard panel below the common hard panel, and sequentially finishing the construction of the a-layer common hard panel layer and the construction of the a + 1-layer reinforced region geotechnical filler and the non-reinforced region filler according to the method in the step 7-1.
And 8, constructing a lower transition panel layer: inserting the bottom of the prefabricated lower transition panel and the top of the common hard panel, and pressing and fixing the geosynthetic material placed on the common hard panel; one side or two sides of the lower transition panel are horizontally spliced with the adjacent lower transition panel to form a lower transition panel layer; completing the construction of the a +2 th layer of the geotechnical filler according to the method in the step 6; one end of the geosynthetic material is then placed on the lower transition panel layer and horizontally spread toward the side slope.
And 9, constructing the damping and energy dissipating layer, which comprises the following steps.
Step 9-1, constructing a first layer of damping and energy-dissipating panel layer: connecting the vertical edge of an L-shaped block body at the bottom of the shock absorption and energy dissipation panel with the vertical edge of an inverted L-shaped block body at the top of the lower transition panel by adopting a shock absorption elastic damping element, then placing the transverse edge of the inverted L-shaped block body and the transverse edge of the L-shaped block body in a staggered manner, wherein the transverse edge of the inverted L-shaped block body is positioned in a prefabricated groove at the bottom of the shock absorption and energy dissipation panel, and the transverse edge of the L-shaped block body is positioned in a prefabricated groove at the top of the lower transition panel; the inverted L-shaped block body, the L-shaped block body and the damping elastic damping element form a group of damping and energy dissipating devices; then, the geosynthetic material placed on the lower transition panel is compressed and fixed; one side or two sides of the shock absorption and energy dissipation panel are horizontally spliced with the adjacent shock absorption and energy dissipation panel to form a shock absorption and energy dissipation panel layer; completing the construction of the a +3 th layer of the geotechnical filler according to the method in the step 6; and continuously laying the geosynthetic material, wherein one end of the geosynthetic material is hung on the rib material hook of the damping and energy dissipation panel and pressed into the panel.
Step 9-2, constructing a b-layer damping and energy-dissipating panel layer: and (3) connecting the bottom of the shock absorption and energy dissipation panel with the top of the shock absorption and energy dissipation panel positioned below by adopting the shock absorption and energy dissipation device in the step 9-1, and sequentially finishing the construction of the b-layer shock absorption and energy dissipation panel layer and the construction of the a + b + 3-layer geotechnical filler according to the method in the step 9-1.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (7)
1. The utility model provides a shock attenuation panel assembled reinforced earth retaining wall which characterized in that: comprises a retaining wall body and a wall rear filling body;
the retaining wall body is arranged at the front end of the side slope, and the wall rear filling body is arranged between the retaining wall body and the side slope;
the retaining wall body comprises an assembled foundation layer, a bottom panel layer, a hard supporting layer, a lower transition panel layer, a damping and energy dissipating layer, an upper transition panel layer and a capping panel layer which are sequentially arranged from bottom to top;
the assembly type foundation layer is formed by horizontally splicing a plurality of prefabricated assembly type foundations;
the bottom panel layer is formed by horizontally splicing a plurality of prefabricated bottom panels, and a drainage channel is preset in each bottom panel;
the hard supporting layer comprises a plurality of common hard panel layers, and each common hard panel layer is formed by horizontally splicing a plurality of prefabricated common hard panels;
the bottom of the bottom panel is spliced with the top of the assembly type foundation, the top of the bottom panel is spliced with the adjacent common hard panel, and the upper common hard panel and the lower common hard panel are spliced with each other;
the lower transition panel layer is formed by horizontally splicing a plurality of prefabricated lower transition panels; the bottom of the lower transition panel is spliced with an adjacent common hard panel;
the shock absorption and energy dissipation layer comprises a plurality of shock absorption and energy dissipation panel layers, and each shock absorption and energy dissipation panel layer is formed by horizontally splicing a plurality of prefabricated shock absorption and energy dissipation panels;
the upper transition panel layer is formed by horizontally splicing a plurality of prefabricated upper transition panels;
the top parts of the lower transition panel and the shock absorption and energy dissipation panel are respectively provided with a top prefabricated groove, each top prefabricated groove is internally provided with an inverted L-shaped block body and a rib hook, and the vertical edge of each inverted L-shaped block body is fixedly connected with the bottom part of the top prefabricated groove;
bottom prefabricated grooves are formed in the bottoms of the shock absorption and energy dissipation panel and the upper transition panel, an L-shaped block body is arranged in each bottom prefabricated groove, and the vertical edge of each L-shaped block body is fixedly connected with the bottom of the corresponding bottom prefabricated groove; the transverse edges of the inverted L-shaped block body and the transverse edges of the L-shaped block body are placed in a staggered mode, the transverse edges of the inverted L-shaped block body are located in the bottom prefabricated groove, the transverse edges of the L-shaped block body are located in the top prefabricated groove, and the vertical edges of the inverted L-shaped block body and the vertical edges of the L-shaped block body are connected through the damping elastic damping elements; the inverted L-shaped block body, the L-shaped block body and the damping elastic damping element form a damping and energy dissipating device together;
the cover top panel layer is formed by horizontally splicing a plurality of prefabricated cover top panels, and the bottom of each cover top panel is spliced with the top of the upper transition panel;
the filler behind the wall comprises a reverse filter layer, a geosynthetic material, a reinforced region geotechnical filler and non-reinforced region filling soil; the inverted filter layer is positioned at the bottom of the wall rear filling body, and vertical edges of the inverted filter layer lean against the assembled foundation layer, the bottom panel layer and the hard supporting layer; the geosynthetic material is horizontally laid, and one end of the geosynthetic material is embedded in the seam between layers of the retaining wall body; the geotechnical filler in the reinforced area is filled in the geosynthetic material, and the filling soil in the non-reinforced area is filled in the area between the reinforced area and the side slope.
2. The shock-absorbing panel fabricated reinforced retaining wall as set forth in claim 1, wherein: the top height of the hard support layer is not lower than 1/2-2/3 of the height of the retaining wall body.
3. The shock-absorbing panel fabricated reinforced retaining wall as set forth in claim 1, wherein: and non-horizontal structures are arranged on the lower transition panel and the shock absorption and energy dissipation panel which are positioned on two sides of the prefabricated groove at the top, and on the shock absorption and energy dissipation panel and the upper transition panel which are positioned on two sides of the prefabricated groove at the bottom.
4. The shock-absorbing panel fabricated reinforced retaining wall as set forth in claim 3, wherein: the non-horizontal structure is corrugated or tooth-like.
5. The shock-absorbing panel fabricated reinforced retaining wall as set forth in claim 1, wherein: the assembled foundation top is provided with the inverted convex recess, and bottom panel bottom is provided with the bellying, and the bellying is pegged graft the cooperation each other with the inverted convex recess.
6. A construction method of the damping panel fabricated reinforced retaining wall according to any one of claims 1 to 5, wherein: the method comprises the following steps:
step 1, preparation of construction materials: preparing materials required by the construction of the retaining wall body and the wall rear filling body;
step 2, checking and calculating the stability of the retaining wall and determining the reinforcement length: determining the length D =0.4-0.7H of a rib material behind a retaining wall panel by calculating the external stability and the internal stability of the retaining wall, wherein H is the height of the damping fabricated panel reinforced earth retaining wall; the total length of the geosynthetic material is L = D + s, and s is the length of the geosynthetic material pressed into the panel; the vertical spacing between the reinforcement materials is 0.4m-0.8 m;
step 3, shock absorption panel assembly type reinforced earth retaining wall anti-seismic: the pseudo-static method is adopted for calculation, so that the retaining wall meets the stability requirement under the action of resisting the earthquake of more than six grades;
and 4, constructing an assembly type foundation layer: horizontally splicing the prefabricated assembly type foundation to form an assembly type foundation layer, sequentially arranging a reverse filter layer and a geosynthetic material on a foundation plane on the side of a filler behind a wall, placing one end of the geosynthetic material on the assembly type foundation, spreading the geosynthetic material, and tensioning the geosynthetic material from the rear end of the geosynthetic material;
step 5, constructing a bottom panel layer: inserting the bottom of the prefabricated bottom panel into the fabricated foundation, and compressing and fixing the geosynthetic material placed on the fabricated foundation; one side or two sides of the bottom panel are horizontally spliced with the adjacent bottom panel to form a bottom panel layer; the drainage channels in the bottom panel layer are communicated, and the effluent water faces a drainage ditch;
step 6, the first layer of the geotechnical filler in the reinforced area and the soil filling construction in the non-reinforced area: paving a reinforced region geotechnical filler above the geosynthetic material with one end compressed and fixed in the step 5, filling non-reinforced region filling soil between the reinforced region and the slope surface of the side slope, and compacting to complete the construction of the first layer of reinforced region geotechnical filler and the non-reinforced region filling soil; then, continuously laying a reverse filter layer and a geosynthetic material, wherein one end of the geosynthetic material is pressed into the bottom panel;
and 7, constructing the hard supporting layer, which comprises the following steps:
7-1, constructing a first layer of common hard panel layer: inserting the bottom of a prefabricated common hard panel into a bottom panel, and pressing and fixing the geosynthetic material placed on the bottom panel; one side or two sides of the common hard panel are horizontally spliced with the adjacent common hard panel to form a common hard panel layer; according to the method in the step 6, completing the construction of the geotechnical filler in the reinforced area of the second layer and the filling in the non-reinforced area; then, continuously laying a reverse filter layer and a geosynthetic material, wherein one end of the geosynthetic material is pressed into the common hard panel layer;
step 7-2, constructing a layer a of common hard panel layer: inserting the bottom of the common hard panel and the top of the common hard panel below the common hard panel, and sequentially finishing the construction of a layers of common hard panel layers and the construction of a +1 layers of reinforced region geotechnical filler and non-reinforced region filler according to the method in the step 7-1;
and 8, constructing a lower transition panel layer: inserting the bottom of the prefabricated lower transition panel and the top of the common hard panel, and pressing and fixing the geosynthetic material placed on the common hard panel; one side or two sides of the lower transition panel are horizontally spliced with the adjacent lower transition panel to form a lower transition panel layer; completing the construction of the a +2 th layer of the geotechnical filler according to the method in the step 6; placing one end of the geosynthetic material on the lower transition panel layer, and horizontally spreading the geosynthetic material to a side slope;
and 9, constructing a damping energy dissipation layer, comprising the following steps of:
step 9-1, constructing a first layer of damping and energy-dissipating panel layer: connecting the vertical edge of an L-shaped block body at the bottom of the shock absorption and energy dissipation panel with the vertical edge of an inverted L-shaped block body at the top of the lower transition panel by adopting a shock absorption elastic damping element, then placing the transverse edge of the inverted L-shaped block body and the transverse edge of the L-shaped block body in a staggered manner, wherein the transverse edge of the inverted L-shaped block body is positioned in a prefabricated groove at the bottom of the shock absorption and energy dissipation panel, and the transverse edge of the L-shaped block body is positioned in a prefabricated groove at the top of the lower transition panel; the inverted L-shaped block body, the L-shaped block body and the damping elastic damping element form a group of damping and energy dissipating devices; then, the geosynthetic material placed on the lower transition panel is compressed and fixed; one side or two sides of the shock absorption and energy dissipation panel are horizontally spliced with the adjacent shock absorption and energy dissipation panel to form a shock absorption and energy dissipation panel layer; completing the construction of the a +3 th layer of the geotechnical filler according to the method in the step 6; continuously laying the geosynthetic material, wherein one end of the geosynthetic material is hung on the rib material hook of the damping and energy dissipation panel and pressed into the panel;
step 9-2, constructing a b-layer damping and energy-dissipating panel layer: connecting the bottom of the shock absorption and energy dissipation panel with the top of the shock absorption and energy dissipation panel positioned below by adopting the shock absorption and energy dissipation device in the step 9-1, and sequentially completing the construction of a layer b of the shock absorption and energy dissipation panel layer and the construction of a layer a + b +3 of the geotechnical filler according to the method in the step 9-1;
step 10, constructing an upper transition panel layer: connecting the bottom of the prefabricated upper transition panel with the top of the shock-absorbing and energy-dissipating panel by adopting the shock-absorbing and energy-dissipating device in the step 9-1; one side or two sides of the upper transition panel are horizontally spliced with the adjacent upper transition panel to form an upper transition panel layer; according to the method of the step 6, completing the construction of the a + b +4 th layer of the geotechnical filler; placing one end of the geosynthetic material on the upper transition panel layer, and horizontally spreading the geosynthetic material to a side slope;
step 11, constructing a cover top panel layer: inserting the bottom of the prefabricated cover top panel and the top of the upper transition panel; one side of the coping panel or two sides of the coping panel layer are horizontally spliced with the adjacent coping panel to form the coping panel layer; and 6, completing the construction of the a + b +5 th layer of the geotechnical filler according to the method in the step 6.
7. The construction method of a shock-absorbing panel-fabricated reinforced retaining wall according to claim 6, wherein: further comprising step 12, coating protection: and after the construction of the capping panel layer is finished, covering a soil layer or a cast-in-place concrete layer on the top of the retaining wall body to protect the wall top.
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| CN111119229A (en) * | 2019-11-01 | 2020-05-08 | 中铁二院工程集团有限责任公司 | Multi-stage reinforced retaining wall comprehensive protection system suitable for large-scale waste slag yard and stability checking and calculating method and construction method thereof |
| CN111287041B (en) * | 2020-02-24 | 2021-08-27 | 河海大学 | Soil retaining structure in limited space and construction process thereof |
| CN111945775B (en) * | 2020-08-18 | 2021-08-17 | 中南大学 | Assembled expansive soil slope ecological shock attenuation reinforced earth double sided board unit and native barricade |
| CN112240031B (en) * | 2020-10-15 | 2021-10-15 | 安徽省交通规划设计研究总院股份有限公司 | Retaining wall system capable of reducing construction influence and construction method thereof |
| CN112281637B (en) * | 2020-11-04 | 2021-11-26 | 武汉大学 | Anti-seismic wall reinforced earth abutment and construction method thereof |
| CN112647535B (en) * | 2020-12-22 | 2021-11-16 | 同济大学 | Assembled retaining wall shock attenuation energy-absorbing structure |
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| CN207597420U (en) * | 2017-12-04 | 2018-07-10 | 樊宗义 | A kind of hydraulic engineering ecology retaining wall building block |
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